fix(api): add tenant_id to active_sessions fixture

- Add tenant_id field to active_sessions.json fixture for consistency
  with devices
- Update TestActiveSessionResolve expectation to include TenantID field
- Ensures active sessions are properly associated with tenants in tests

Author: heiytor

api/store/mongo/fixtures/active_sessions.json

@@ -2,7 +2,8 @@
     "active_sessions": {
         "650a1c1b3b3bb3a0f8e9bf43": {
             "last_seen": "2023-01-01T12:00:00.000Z",
-            "uid": "a3b0431f5df6a7827945d2e34872a5c781452bc36de42f8b1297fd9ecb012f68"
+            "uid": "a3b0431f5df6a7827945d2e34872a5c781452bc36de42f8b1297fd9ecb012f68",
+            "tenant_id": "00000000-0000-4000-0000-000000000000"
         }
     }
 }

api/store/mongo/session_test.go

@@ -591,6 +591,7 @@ func TestActiveSessionResolve(t *testing.T) {
 				activeSession: &models.ActiveSession{
 					UID:      "a3b0431f5df6a7827945d2e34872a5c781452bc36de42f8b1297fd9ecb012f68",
 					LastSeen: time.Date(2023, 1, 1, 12, 0, 0, 0, time.UTC),
+					TenantID: "00000000-0000-4000-0000-000000000000",
 				},
 				err: nil,
 			},